JSR303 分組数据验证的使用

场景：一个Bean ,需要在不同情况下分别做验证

１．依赖：springboot 已经集成

<dependency>
       <groupId>com.fasterxml.jackson.datatype</groupId>
　　<artifactId>jackson-datatype-jsr310</artifactId>
</dependency>

２．定义一个ｂｅａｎ　（验证对象）

import javax.validation.constraints.NotEmpty;
import lombok.Getter;
import lombok.Setter;
import lombok.ToString;
@Getter
@Setter
@ToString
public class XiaoMIEntry {

    @NotEmpty(groups={AgroupMI2.class,AgroupMI.class},message="name can't be  null")
    private String name;

    private Double  price;

    @NotEmpty(groups={AgroupMI.class},message="color can't be  null")
    private  String color;

    public XiaoMIEntry(@NotEmpty(groups = AgroupMI2.class, message = "name can't be  null") String name, Double price,
            @NotEmpty(groups = AgroupMI.class, message = "color can't be  null") String color) {
        super();
        this.name = name;
        this.price = price;
        this.color = color;
    }

    public XiaoMIEntry() {
        super();
    }

}

３．定义分组（仅仅是一个接口，需要extends javax.validation.groups.Default　仅仅只是标识）

分组：１：

import javax.validation.groups.Default;

public interface AgroupMI extends Default{

}

分组：２：

import javax.validation.groups.Default;

public interface AgroupMI2 extends Default{

}

验证方法：工具类；

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package com.icil.elsa.subscribe.milestone.common.utils;

import java.util.Set;

import javax.validation.ConstraintViolation;
import javax.validation.Validation;
import javax.validation.Validator;
import javax.validation.ValidatorFactory;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
 *
 * @ClassName:  BeanValidationUtils
 * @Description:
 * @Author: Sea
 * @Date: 14 Sep 2018 11:24:49 AM
 * @Copyright: 2018 ICIL All rights reserved.
 */
public class BeanValidationUtils {

  private static final Logger logger = LoggerFactory.getLogger(BeanValidationUtils.class);

  /**
   *
   * @param obj
   * @return
   */
  public static String getBeanValidate(Object obj) {
    StringBuilder validationMessage = new StringBuilder();
    ValidatorFactory factory = Validation.buildDefaultValidatorFactory();
    Validator validator = factory.getValidator();
    Set<ConstraintViolation<Object>> violations = validator.validate(obj);
    for (ConstraintViolation<Object> violation : violations) {
      if(violation.getMessage() != null && !"".equals(violation.getMessage())) {
          validationMessage.append("<p>"+violation.getMessage()+" ;</p>");
          }
      }
    return validationMessage.toString();
  }

  /**
   *
   * @param obj:需要验证的 bean
   * @param group :需要验证的分组
   * @return
   */
  public static String getBeanValidateByGroup(Object obj,Class<?> group) {
        StringBuilder validationMessage = new StringBuilder();
        ValidatorFactory factory = Validation.buildDefaultValidatorFactory();
        Validator validator = factory.getValidator();
        Set<ConstraintViolation<Object>> violations = validator.validate(obj,group);
        for (ConstraintViolation<Object> violation : violations) {
          if(violation.getMessage() != null && !"".equals(violation.getMessage())) {
              validationMessage.append("<p>"+violation.getMessage()+" ;</p>");
              }
          }
        return validationMessage.toString();
      }

}

test :

import org.junit.Test;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import org.junit.runner.RunWith;
@RunWith(SpringRunner.class)
@SpringBootTest
public class ValitionByGrouptest {

    @Test
    public void testgroup1() throws Exception {

        XiaoMIEntry xiaoMIEntry = new XiaoMIEntry(null, 1.2, null);

        String beanValidateByGroup = BeanValidationUtils.getBeanValidateByGroup(xiaoMIEntry, AgroupMI.class);
        System.out.println("###############");
        System.out.println(beanValidateByGroup);
        System.err.println("######################");

    }

    @Test
    public void testgroup2() throws Exception {

        XiaoMIEntry xiaoMIEntry = new XiaoMIEntry(null, 1.2, null);

        String beanValidateByGroup = BeanValidationUtils.getBeanValidateByGroup(xiaoMIEntry, AgroupMI2.class);
        System.out.println("###############");
        System.out.println(beanValidateByGroup);
        System.err.println("######################");

    }